Update: http://windowsupdate.microsoft.com
Corp: http://www.symantec.com/
http://www.mcafee.com/us/
(the Ad-Aware people): http://www.lavasoftusa.com/software/adaware/
Search & Destroy: http://www.safer-networking.org/en/download/index.html
http://www.spychecker.com/program/hijackthis.html
